ORDER 89. LABIATJE. 545 



stam. 4. On Lookout Mt Tenn. ! to Middle Ga. Plant 1 to 2f high, simple. 

 Lvs. large (6 to 8' long), petioles about 2'. Rac. 5 to 10'. Fls. twice larger (7 

 to 9" long) than in Nos. 2 and 3. Stam. and sty. very long, spreading. Lower 

 lip strongly fringed. May, Jn. 



5 C. anisata Ph. Yiscid-pubescent ; Ivs. broad-ovate, acute, subserrate, at base 

 cordate or truncate, scabrous above, the floral similar, very small, sessile ; pan- 

 icle dense-flowered ; fls. opposite ; cat. teeth ovate, obtuse, with a short mucro, tJie 

 3 upper longer; stam. 4. Middle Ga. (Feay), Ala., Fla. ? Plant 1 to 2f high. 

 Lvs. 5 to 7' by 3 to 5', very rugous, often short acuminate, petioles 1' to 15". 

 Fls. about as large as in No. 1. Jl. Sept. 



12. HYSSO'PUS, L. HYSSOP. (Hebrew ezeb ; Arabic uzzof ; English 

 hyssop.) Calyx tubular, 15-striate, equally 5-toothed, upper lip of the 

 corolla erect, flat, emarginate, lower lip 3-parted, the middle segment 

 largest, tube about as long as the calyx ; stamens 5, exserted, diverging. 

 H. officinalis L. Lvs. linear-lanceolate, acute, entire, sessile ; cal. teeth erect ; 

 fls. in racemous, secund verticils; middle division of the corolla 2-lobed, entire. 

 It Cultivated for its reputed medicinal properties. A handsome plant, grow- 

 ing in tufts 2f high, with delicate foliage and bright blue flowers. Jl. \ S. Eur. 

 13. PYCNANTHEMUM, MX. BASIL. (Gr. TTVKVO^ dense, dvdot; ; 

 alluding to the dense, capitate inflorescence.) Calyx tubular, 10 to 13- 

 striate, 5-toothed, teeth equal or subbilabiate, throat naked within ; up- 

 per lip of corolla nearly entire, lower lip trifid, middle lobe longest, all 

 ovate, obtuse, stamens 4, distant, subequal, anthers with parallel cells. 

 It Erect, rigid herbs, all N. American. Verticils dense, many-flow- 

 ered. 



Calyx subbilabiate, in flattish, often loose cymes. Leaves petiolatc. (a) 

 Calyx subequally cleft, in roundish, dense heads, (b) 



a Teeth of the calyx ovate, acute, awnless No. 1 



a Teeth of the calyx produced into bearded awns, shorter than corolla Nos. 24 



b Calyx teeth and bracts with naked awns equaling the corolla Nos. 5, 6 



b Calyx shorter than tho corolla. Heads panicled. Leaves subpetiolate.. .Nos. 7 9 



Heads coryrnbed. Leaves sessile Nos. 10 12 



Head solitary, large No. 13 



1 P. albescens Torr. & Gr. Lvs. ovate or lance-ovate, subserrate, acute at each end, 

 subglabrous, whitened beneath, the upper whitened both sides, all petiolate ; fls. 

 separate, at length in little secund racemes; cal. teeth much shorter than its 

 tube. Ala. to La. St. 2 to 3f high, much branched. Lvs. 18'' to 3' long, often 

 puberulent beneath. Cymes many, in fruit 1' to 18" broad. Fls. as in all the 

 species, small, reddish. 



2 P. Tullia Benth. Lvs. ovate or oblong, acute or acuminate, subserrate, and 

 with the stem mllous-pubescent, the floral whitened, fls. separate, at length in little 

 secund simple racemes ; cal. teeth ending in subulate, bearded awns, about equal- 

 ing the tube. Mts. of E. Tenn., N. Car. to Ga. Lvs. as in No. 1, varying from 

 ovate to lanceolate. Lower lip of calyx somewhat shorter. 



3 P. incanum MX. WILD BASIL. Lvs. oblong-ovate, acute, subserrate, rounded 

 at the base, petiolate, hoary-tomentous beneath, the floral whitened both sides ; 

 cymes dilated, not in racemes ; cal. teeth subequal, subulate, aristate, bearded at 

 apex. Rocky woods and barrens, Can., N. Mid., "VV. States. St. 2 to 4f high, 

 covered with soft, whitish down like the rest of the plant. Cymes all canescent, 

 1' or less broad. Cor. pale red, dotted with purple. Aug. (P. Loomisii, Nutt) 



4 P. clinopodioides Torr. & Gr. Lvs. oblong-lanceolate, acute at each 

 end, subserrate, smoothed above, pubescent beneath ; sts. and branches villous- 

 pubescent ; cymes contracted and almost capitate, terminal and sessile at the upper 

 nodes ; bracts ciliate ; cal. teeth subulate, often tufted with hairs at apex. Dry 

 soils, N. Y., N. J., to Ind. Plant corymbously branched, 2 to 3f high, scarcely 

 canescent, never whitened. Lvs. 2 to 3' long. Cymes less than G" broad. Aug. r 

 Sept 



5 P. aristatrum MX. Lvs. ovate-oblong, acute, subserrate,. rounded at base, on short 

 petioles, and with tlia stem glabrous or minutely canescent-downy ; bracts rigid, 



35 



